Imay be getting a GST 7.7 roller in a trade and I was curious about the engine. Iv done some reading and it seems the stock 7.7 mill is not desirable with tuning and temp problems, or have these issues been resolved? It also seems aftermarket engines are not totally compatible with the GST set-up. Is the GSR 5.0 clutch assembly all Ineed to fit a .28, .30, or .32 mill on this truck? What have you other GST owners used as a powerplant for these trucks, and how was it mounted? I have a modified k4.6 I could spare to power this truck, but would this have enough ass to move this big truck?

Doesnt seem to be many posts about aftermarket engines in the GST aside from the OS 30 and I wanted to get some more opinions from GST owners on a good direction. Would a modified picco 28 do this truck well?

Please PM me if you know specifics, or post here so we can discuss...Im pretty pumped to own one of these trucks as they are not widely seen, and the size is impressive.